Adhesive-applying mechanism



H. W. WHITE.

ADHESIVE APPLYING MECHANISM.

APPLICATION FILED OCT. 1. 1920.

1,407,612, Patented Feb. 21, 1922.

AndRNEv tree " RYWVINSLOW WHITE, 02 GOMMACK, N WORK,

annEsrvn-arrn'rme necessitate.

meters.

Specification of LettersPatent. Patented! Feb, 21, 31922,,

Application filed October i, 19%. Serial 1W0. 414,077.,

To all whom it may concern:

Be it known that l, HENRY WINsLow Wmm, a citizen ofthe United States,residing at Gommack, in the county of Suffolk and State of NewYork, haveinvented a new and useful Adhesive-Applying Mechanism, of which thefollowing is a specification. I

This invention relates to adhesive applying mechanisms more particularlythose of the type used in depositing a narrow strip of paste or the likeonto a moving web of paper or similar material. Such an operation isperformed in machines such as bagmaking machines and tube-makingmachines.

An ordinary mechanism for applying the strip of adhesive such as pasteto a web of paper, has included a wheel partly submerged in a mass offluid paste, and so disposed that friction between the web of paperandthe periphery of the wheel causes the wheel to rotate becoming coatedwith paste and thereby the amount of adhesive so transferred beingregulated by a fixed scraper which functioned more or lesssatisfactorily in removing the excess paste from the coated wheel. Smalllumps of adhesive are generally unavoidable, especially in paste. Thepaste is also an attraction for flies and other insects. The lumps ofpaste and the insects are carried by the wheel toward the scraper Wherethey frequently become lodged and thereby prevent suficient paste from.getting onto the web. In machines operating at high speed, the

pears in, a large number of completed articles which may escapeinspection.

It is an object of my invention, therefore, to provide adhesive applyingmechanism in which an even amount of adhesive is applied withoutinterference from foreign matter in the adhesive supply.

Another object of my invention is to provide an adheslve applyingmechanism wherein the amount of adhesive to be closely regulated.

In the accompanying drawings 1 have shown, as an illustration of myinvention, an embodiment of an adhesive applying mechanism such as Ihave found to be well suited for pasting the seam in a paper bag; but Idesire that the drawings shall be considered as illustrating theinvention rather than limiting it.

be applied can transferring the paste onto the web,

imperfectly pasted seam ap- 'In the drawings Figures 1 and 2 are, respectively, elevational view of the structure.

Theweb of paper A entersthe machine as indicated and travels in thedirection of the arrows. The web is wrappedpart way about the surface ofa cylindrical web-carrying roll-5 before it passes to'the left intofolding or other mechanisms (not shown). As the paper passes over theweb-carrying rOll 5 dis customary to apply a narrow strip of adhesivesuch as paste to the'paper.

5 The shaft 6 which carries the roll 5 is provided near one end thereofwith a gear 7 whose pitch diameter is equal to the diameter-of thecylinder 5. A small idler 8 is supported onthe main frame 9 below thegear 7 and a little to the right of shaft 6. A box or container10,-filled with paste 13, is

also carried by the main frame below and to the right of the roll 5. Ashaft 11 extends across the paste container 10 and is provided with awheel 12 adapted to become coated with the adhesive, in the presentinstance paste, andwith a gear lwhose pitch diameter is equal to theoutside diameter of the adhesive wheel 12. The gear 14 meshes with theidler 8.as indicated.

As the web of paper A is drawn into the an end elevational view-and aside machine it may rotate the web-carrying roll v 5 in the direction ofthe arrow or this roll maybe rotated by power otherwise supplied. Therotation of this roll will rotate the idler 8, the gear 14, and theadhesive-carrying wheel 12, in the direction indicated, giving theadhesive wheel-12 the same peripheral speed as the surface speed of theweb-car rying roll 5. The adhesive wheel 12 will become heavily loadedwith paste which is not scraped ed as heretofore. J

In order to transfer the proper amount of fluid paste from the heavilycoated wheel 12 onto the moving web of paper I provide a paste transferwheel 15 which i's preferably slightly thinner than theadhesive-carrying i wheel 12. -The paste transfer wheel 15 is mountedtorotate freely between a pair of ing the wing nut 23 and moving the arm'20 backwards or forwards as desired. This will result in shifting theaxis of rotation of the transfer wheel 15 along'the arcs a--b. The wheel15 will be in frictional contact with either the paper A or theadhesive-carrying wheel 12 and will be rotated in the directionindicated by either one or the other of them. The amount of paste willdepend, however, upon the distance which separates the transfer wheelfrom the web or fromthe paste wheel. The range of adjustment is suchthat the wheel 15 may be moved entirely out of engagement with the webor the paste-carrying wheel at will. It is desirable to prevent thetransfer of paste at certain times especially when feeding-in the paperor when the machine is standing idle. I

The paste transfer wheel 15 picks up fluid paste only from the heavilycoated paste wheel 12, rejecting such foreign matters as lumps of paste,an even, regular strip of paste so that the articles produced by themachine with which it is associated are uniformly pasted.

While I have described this embodiment of my invention in considerabledetail, I desire to have it understood that this description isillustrative of the invention, for it may undoubtedly be embodied inother specific structures within the scope of the appended claims.

What I claim is: v

1. Adhesive applying mechanism comprising a rotatably mounted adhesivewheel, a Web-carrying roll, means for rotating the adhesive wheel, and afreely rotatable wheel to transfer adhesive from the adhesive wheel ontoa web on said web-carrying roll, said freely rotatable wheel beingmounted on a shiftable axis.

2. Adhesive applying mechanism comprising a rotatably mounted adhesivewheel, a web-carrying roll, means for rotating the adhesive wheel at thesame peripheral speedas the surface speed of the web-carrying roll, anda freely rotatable wheel to transfer adhesive from the periphery of theadhesive wheel onto a web on said web-carrying roll, said freelyrotatable wheel being mounted on a shiftable axis.

3. Adhesive applying mechanism comprising a rotatably mountedadhesivewheel, a web-carrying roll, means for rotating the adhesivewheel, a freely rotatable wheel to transfer adhesive from the adhesivewheel onto a web on said web-carrying roll, and means to move the axisof rotation of the otatable wheel; to thereby adjust the amount ofadhesive transferred.

4. Adhesive applying mechanism coriipris ing a rotatably mountedadhesive wheel, a web-carrying roll, means for rotating the adhesivewheel at the same peripheral speed as the surface speed of theweb-carrying insects, etc., and provides.

, prising roll, a freely rotatable wheel to transfer adhesive from theperiphery of the adhesive wheel onto a web on said web-carrying roll,and means to move the axis of rotation of the rotatable wheel to therebyadjust the amount of adhesive transferred.

- 5. Adhesive applying mechanism comprising a rotatably mounted adhesivewheel, a freely rotatable web-carrying roll, means for rotating theadhesive wheel in response to rotation of the web-carrying roll, and afreely rotatable wheel to transfer adhesive from the adhesive wheel ontoa web on said web-carrying roll, said freely rotatable wheel beingmounted on a shiftable axis.

6. Adhesive applying mechanism comprising a rotatably mounted adhesivewheel, a freely rotatable web-carrying roll, means for rotating theadhesive wheel in response to rotation of the web-carrying roll and atthe same peripheral speed as the surface speed of the'web-carry ng roll,and a freely rotatable wheel to transfer adhesive from the periphery ofthe adhesive wheel onto a web on said web-carrying roll, said freelrotatable wheel being mounted on a shi able axis.

7. Adhesive applying mechanism comprising a rotatably mounted adhesivewheel, a freely rotatable web-carrying roll, mean for rotating theadhesive wheel in response to rotation of the web-carrying roll, afreely rotatable wheel to transfer 1 adhesive from adhesive wheel onto aweb on said web-carrying roll, and means to move the axis of rotation ofthe rotatable wheel to thereby adjust the amount of ad-f hesivetransferred.

8. Adhesive applying mechanism coma rotatably mounted adhesive wheel, afreely rotatable web-carrying roll, means for rotating the adhesivewheel in response to a rotation of the web-carrying roll and at the sameperipheral speed as the surface speed of the web-carrying roll, a freelyrotatable wheel to transfer adhesive from the periphery of the adhesivewheel onto a web on said web-carrying roll, and -means to move the axisof rotation of the rotatable 'wheel to thereby adjust the amount ofadhesive transferred.

9. Adhesive applying mechanism comprising a web-carrying roll, acontainer for adhesive, a driven adhesive wheel adapted to becomeheavily coated with adhesive from the adhesive container, and meanscomprising a freely rotatable wheel mounted on a shiftable axis totransfer a small amount of adhesive from the adhesive wheel -'onto a webon the web-carrying roll, said means being incapable of transferringforeign materials.

10. Adhesive applying mechanism com-' prising a web-carryin roll, acontainer for adhesive, a driven ad esive wheel adapted to becomeheavily coated with adhesive from the adhesive container, and means toreceive fluid adhesive from the coating on the adhesive wheel rejectingsolid and semi-solid matter therein and depositing the fluid adhesive ona Web on the webcarrying roll.

11. Adhesive applying mechanism comprising a web-carrying roll, acontainer for adhesive, a driven adhesive wheel adapted to becomeheavily coated with adhesive from the adhesive container, and means toreceive an adjustable amount of fluid adhesive from the coating on theadhesive wheel rejecting solid and semi-solid matter therein anddepositing the fluid adhesive on a web on the web-carrying roll.

12. The combination with a web-carrying roll, an adhesive containeradjacent thereto, and an adhesive wheel in the adhesive container; ofmechanism interconnecting the web-carrying roll and adhesive wheel torotate the one from the other, and means independent of saidinterconnecting mechanism for transferring adhesive from the adhesivewheel onto a web on the web-carrying roll when the roll and wheel arerotated, said means including .a freely rotatable wheel. mounted on ashiftable axis.

13. The combination with a web-carrying roll, an adhesive containeradjacent thereto, and an adhesive wheel in the adhesive container; ofmechanism interconnecting the web-carrying rolland adhesive wheel torotate the one from the other, means independent of said interconnectingmechanism for transferring adhesive from the adhesive wheel onto a webon the web-carrying rollwhen the roll and wheel are rotated, said meansincluding a freely rotatable wheel mounted on a shiftable axis, andmeans to shift the axis whereby the adhesive transferring capacity ofthe aforesaid means is adjustable.

14. In combination, a web-carrying roll, an adhesive container, anadhesive wheel in the container adapted to become coated with adhesivewhen rotated in the same, a gear train between the web-carrying roll andthe adhesive wheel, to rotate the latter at the same peripheral speed asthat ofthe web-carrying roll, and a freely rotatable wheel co-operatingwith both the web on the web-carrying roll and the adhesive wheel totransfer adhesive onto the web, said freely rotatable wheel beingmounted on a shiftable axis.

15. In combination, a web-carrying roll, an adhesive container, anadhesive wheel in the container adapted to become coatedto shift theaxis of rotation of the last mentioned wheel whereby the amount ofadhesive transferred is. regulated.

16. In combination, a web-carrying roll, an adhesive container, anadhesive wheel in the container adapted to become. coated with adhesivewhen rotated in the same, a gear train between the web-carrying roll andthe adhesive wheel to; rotate the latter at the same peripheral speed asthat of the web-c-arrying-roll, a freely rotatable wheel co-operatingwith both the web on the web-carrying roll and the adhesive wheeltotransfer adhesive onto the web, a supporting member for the lastmentioned wheel, and an eccentric for shifting said supporting memberand the axis of the last mentioned wheel whereby the amount of adhesivetransferred is regulated.

17. An adhesive applying mechanism comprising a support, a web-carryingroll rotatably mounted on the support, an adhesive container disposedadjacent the webcarrying roll, an adhesive-carrying wheel in thecontainer adapted to be coated with adhesivewhen rotatedv therein,gearing interconnecting the web-carrying roll and adhesive-carryingwheel to rotate them at the same peripheral speed, an adhesive-transferwheel between the web-carrying roll and the adhesive-carrying wheel, a.supporting arm for the adhesive transfer wheel, an eccentrio support forthe arm, and means to position the eccentric and thereby adjust theadhesive-transfer wheel.

r HENRY WINSLOW VVHI-TE.

